foam strip? if you isolate the motor, it will vibrate more, not less.avole wrote:The motor is attached by foam strip, à la Linn and Rega, so I'm fine there.
if you are looking at 'optimal' properties, then none of your materials (on its own) is anywhere near.I can't agree with you about the plywood, as it doesn't, from what I've read, have optimal qualities for turntables. I'm not going with plexiglass partly because I could find little about its acoustic properties, and partly because I've never worked with it before.
I thought you mentioned a sandwich construction, with a foam core? This will have only minimal damping, and probably nowhere near enough to cope with the buzzing motor.Haven't mentioned construction deliberately at the moment, because I'm still working out feasibility, but hopefully it will have damping covered.
cats squirrel wrote:I thought you mentioned a sandwich construction, with a foam core? This will have only minimal damping, and probably nowhere near enough to cope with the buzzing motor.Haven't mentioned construction deliberately at the moment, because I'm still working out feasibility, but hopefully it will have damping covered.
as they are both flawed designs, I don't think I'll bother .avole wrote:For your first point, I suggest you write an urgent letter to Rega (and Linn, though they not longer make the Basik) pointing out the problems with their construction.
I only suggested ply or mdf as those are the only ones you will consider. Given a free choice, both ply and mdf would be near the bottom of any list of materials suitable for plinth construction. If you want to learn, I suggest you look at my web site, then you can choose much more suitable material/s, with the knowledge.For your second point, since you recommend plywood, the information I've researched indicates MDF is more suitable than plywood. Please point me to sources that say otherwise, I'd be happy to read and learn.
Maybe I misread ''Non-suspended deck,by the way. It'll be semi-solid sandwich plinth with a layer of foam/plastic filler for resonance purposes as well as sorbothane feet.''For your third point, I have not mentioned how I'll be putting it together.
andyr, we're talking about turntables here, not speakers.
Also, speaker manufacturers do take into account the properties of the material they use to construct cabinets when they make their speakers.
cats squirrel wrote:there are no references as I did all the work myself. However, if you want other references, look at any book on acoustics, Google books have several at any one time. Look up damping factor (or loss factor), stiffness (Young's Modulus), transmission of sound, and you will find that what I have found is the same as in the books, with a slant on plinth/loudspeaker panels with my offerings.
'3 months in the garage can save a whole morning on the internet.'
Assuring you I am only trying to help, but as the Irishman said when asked the way to Dublin, 'if I were you, I wouldn't start from here!' Clever people, the Irish!
sorry to hear about the burst pipes, bummer.